Keeping New Year’s resolutions, particularly when they are associated with staying in shape, is always a challenge. Even identifying and tracking progress can be overwhelming. Fitbit aims to solve this through a series of low-cost sensors that monitor things such as steps taken, calories burned,  hours slept and quality of sleep. What makes this approach work is that virtually no personal intervention is needed to gather and analyze data (thanks to Bluetooth integration with tablets and smart phones). Another important consideration is that it is unobtrusive and some might even say a fashion statement.